Eleraky Rasha H, Mohy ElDin Mona, Ibrahim Yomna, Soliman Reham S, Wahba Nadia A
Pediatric Dentistry and Dental Public Health Department, Faculty of Dentistry, Alexandria University, 32 Champollion St. Azarita, Alexandria, 21525, Egypt.
Dental Biomaterials Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
BMC Oral Health. 2025 Sep 2;25(1):1400. doi: 10.1186/s12903-025-06731-7.
The difficulty in providing optimal treatment has been related to patients' fear of the discomfort that comes with anesthetic needle insertion. The main purpose of this study is to clinically assess the effect of needle bevel on patient's perception of pain during inferior alveolar nerve block (IANB) anesthesia and evaluate the needle tip for mechanical deformation.
Sixty-six children 5-7 years old, who were indicated for IANB anesthesia, were selected from the outpatient clinic of Pediatric Dentistry and Dental Public Health Department, Faculty of Dentistry, Alexandria University. Participants were randomly allocated into two groups according to the type of needle bevel used. Group I (n = 33) received INAB anesthesia using double scalpel blade bevel needle, while group II (n = 33) received the injection using conventional bevel needle. Pain reaction was evaluated subjectively using modified Maunuksela face pain scale (FPS) and objectively using Sensory, Eye, and Motor (SEM) scale. After the respective injections, the needles were prepared for microscopic examination.
The FPS and SEM showed significantly lower pain scores during IANB anesthesia with double scalpel blade bevel needle compared to the conventional bevel needle (p = 0.002, p = 0.003 respectively). No significant difference in mechanical angle deformation between the two needles was observed (p = 0.837).
For IANB anesthesia, double scalpel blade bevel needle demonstrated significantly less injection pain. All dentalneedles demonstrated tip deformation after single use.
提供最佳治疗的困难与患者对麻醉针插入带来的不适的恐惧有关。本研究的主要目的是临床评估针斜面在下牙槽神经阻滞（IANB）麻醉期间对患者疼痛感知的影响，并评估针尖的机械变形情况。
从亚历山大大学牙科学院儿童牙科和牙科公共卫生系门诊选取66名5 - 7岁需接受IANB麻醉的儿童。根据所使用的针斜面类型将参与者随机分为两组。第一组（n = 33）使用双手术刀刀片斜面针进行INAB麻醉，而第二组（n = 33）使用传统斜面针进行注射。使用改良的莫努克塞拉面部疼痛量表（FPS）主观评估疼痛反应，并使用感觉、眼睛和运动（SEM）量表进行客观评估。在各自注射后，将针准备好进行显微镜检查。
与传统斜面针相比，使用双手术刀刀片斜面针进行IANB麻醉期间，FPS和SEM显示的疼痛评分显著更低（分别为p = 0.002，p = 0.003）。观察到两种针之间的机械角度变形无显著差异（p = 0.837）。
对于IANB麻醉，双手术刀刀片斜面针的注射疼痛明显更小。所有牙科针在单次使用后均显示针尖变形。
